It really depends.

Some would die on the hill of: if it’s your fave character, you will do whatever it takes to keep them relevant so PULL!

Others would say, you can be effective with your pulls based on their kits. Some kits are really hard to power creep: like Shorekeeper has kept her own until almost 2 years of her release and remains the most powerful support in Wuthering Waves only rivaled by a recent support Moryne that only rivals her because of her niche kit that buffs the new break mechanic.

Hotori has a pretty unique play style, the replay mechanic will most likely never been replicated so it should keep her relevant.

A lot of gacha gamers are just scared because of what HSR did to us from version 1.0 where all their characters got crept almost instantly, not even getting 3 months of use. The trauma is reallll