Yes, it's easier to obtain fully evolved forms of rare Pokémon with great ivs. But who cares! Prior to this update I had what I considered to be a solid squad of 90%+ ivs with ideal movesets. Do I think my Pokémon are "devalued?" Absolutely, from the sake of their rarity. But do I care? Absolutely not lol if one is viewing this game as a collector's game or a form of show-and-tell, they are doing it wrong. Nobody cares if you had a rare mon before the addition of raids. This game is a dopamine release.
But at the end of the day, it doesn't matter if you have 0 or 100% Iv Pokémon. Infact, with the damage multipliers update, it Matters the most to know what Pokémon are type effective.