Curious

I've always like transmigration, regression, possession etc such manhwa/manga, never really dive deep into the comments section. But lately I've seen a lot of comments arguing? Debating? Things abt age gap or just age altogether. Like how some complaint abt a reggresor doesn't act his physical age or behave too immature given their mental age, about a canon couple with huge age gape when the couple is a human and another being such as dragons, mage, demon etc. I've also read comments debating is it appropriate for regressor to love someone their 'physical 'age bcs including their age in past life is inappropriate. I mean... is it necessary to think too deeply abt that? Genuinely asking(⌒▽⌒)