He's of course not a generational McDavid level talent but this is an overcorrection imo. Demidov isn't a "normal" prospect who's going to need another year in Russia, 2 years in the AHL, and then have to work his way up from the third line. If it weren't for the KHL contract he'd be on our opening night roster this October.
Slafkovsky, Kotkaniemi, Galchenyuk, and even guys like Mete/De la Rose were able to make NHL impacts at 18/19. Demidov is significantly more talented than all of them and he'll debut at 19. We don't need to worry about if his game can translate as if he's Joshua Roy or Sean Farrell.
Honestly no they shouldn't unless they expect him to be McDavid or something. It's OK to be excited about drafting him and there's not really a compelling reason to downplay how good he is. He's going to be in the top six on our opening night roster in 2025 and will never look back.