"Movie level" means diffrent things in different contexts. I definitely think the animation in the movies is better than what SL usually delivers seasonally (just look at this season's Strongest Demon Lord reincarnated as Typical Nobody, some good animation at the start, and then it deflated. Same that happened with Finest Assassin isekai) and better than the last Prisma TV (3rei)., I'd like better animation, but I'm pretty satisfied with what we have.
Also, anyways, if you think Licht's animation is what we see in an average to below TV anime every seaosn, you need to watch more TV anime. Licht still looks better than a lot of modern TV anime. .It's not on the level of the top players like Kyoani/Ufo/A1/Clowerworks/Wit/Trigger/Mappa/Bones at their best, but it's better than a lot of stuff not coming from these names. There's a lot of mediocre to outright bad animation coming from TV anime. Still would take animation downgrade to get a more faithful less rushed adaptation.