I'm wondering the same thing, I feel the same as when I joined reddit over a decade ago lol.

Some instances have started making FAQs for the reddit refugees. I know the instance for r/FMHY has one.

I made a collection of guide in this post.

I'll try to keep it updated as more guides are created.

Here's one. Linking cross instances is a bit weird, but I see lemmy.world is your home instance so this link should be just fine!

It depends on who you ask. I came across a thread where some of the old people complained about the inflow of normies. They enjoyed an exclusive leftist community and now it's being mainstreamed and centrist political positions are being 'normalized'