So that's where you're trying to go now that you're shitty opinion is being called into question... shift it from parental rights, to non-government organization ratings systems. Okay, let's actually take a look at those since you seem to think they're some form of absolute decision:

Established by Motion Picture Association in 1968, the rating system was created to help parents make informed viewing choices for their children.

G – General Audiences
All ages admitted. Nothing that would offend parents for viewing by children.

PG – Parental Guidance Suggested
Some material may not be suitable for children. Parents urged to give "parental guidance". May contain some material parents might not like for their young children.

PG-13 – Parents Strongly Cautioned
Some material may be inappropriate for children under 13. Parents are urged to be cautious. Some material may be inappropriate for pre-teenagers.

R – Restricted
Under 17 requires accompanying parent or adult guardian. Contains some adult material. Parents are urged to learn more about the film before taking their young children with them.

NC-17 – Adults Only
No one 17 and under admitted. Clearly adult. Children are not admitted.

https://www.motionpictures.org/film-ratings/

The ESRB rating system was founded by the video game industry in 1994 after consulting a wide range of child development and academic experts, analyzing other rating systems, and conducting nationwide research with parents. ESRB found that parents wanted a rating system that has both age-based categories and concise and impartial information regarding content.

Everyone
Content is generally suitable for all ages. May contain minimal cartoon, fantasy or mild violence and/or infrequent use of mild language.

Everyone 10+
Content is generally suitable for ages 10 and up. May contain more cartoon, fantasy or mild violence, mild language and/or minimal suggestive themes.

Teen
Content is generally suitable for ages 13 and up. May contain violence, suggestive themes, crude humor, minimal blood, simulated gambling and/or infrequest use of strong language.

Mature 17+
Content is generally suitable for ages 17 and up. May contain intense violence, blood and gore, sexual content and/or strong language.

Adults Only 18+
Content suitable only for adults ages 18 and up. May include prolonged scenes of intense violence, graphic sexual content and.or gambling with real currency.

https://www.esrb.org/ratings-guide/ https://en.wikipedia.org/wiki/Entertainment_Software_Rating_Board#Ratings

Both of these systems exist specifically to educate parents for their children so they can make a decision. Both of these systems are run by non-government organizations related directly to the industries the ratings apply to. Stores can sell Adults Only 18+ games if they want, most choose not to. Likewise movie theaters can screen NC-17 films if they want, most choose not to. There are no laws requiring these ratings, or even requiring businesses to abide by these ratings suggestions. They are simply there to allow parents to make educated decisions.

Back to your assertion:

Do kids get to go see rated r movies? How about M rated games?

Yes kids go to see R-rated movies all the time. Parents take kids to see these in theaters every day. Parents buy M-rated video games for their children under 17 all the time as well. Because these are decisions being made by parents for their kids. It is not a government mandate and should not be one.

The exact same thing applies to drag shows. There is nothing inherently sexual about dressing in drag. Traditional theatre (like Shakespeare) had men playing all parts, including the female parts in female costume. Almost all media you see will have actors and hosts wearing makeup. All TV shows and movies obviously, but traditional theatre uses a lot of makesup as well to ensure the correct look is being provided to the audience. A stage actor in makeup often will look crazy when you're up close, because they need to compensate for things like extreme direct lighting on stage.

If you believe that dressing in non-traditional clothing and makeup is inherently sexual or deviant, that's entirely on your perception of the world, and you might want to do some deep introspection instead of tryung to force that belief on others.