I think it's just desperate cope. This whole Charlie Kirk martyr thing is not organic, it's a sloppy frantic scramble to uphold the right wing simulacrum of power, righteousness, and control.
You didn't need all that with MLK. Show anyone an MLK speech, it's self evident the man was powerful, charismatic, and a real leader. Charlie Kirk is a freaky little weirdo who comes off as unsettling at best.