I mean, plenty of people also criticized/criticize Jackson's vision. ESPECIALLY where it diverged from the original materials (the whole Faramir storyline etc.). I guess it's less visible because it was two decades ago, and also because the internet has come a long way since. There'd be no shortage of people screaming bloody murder if it was happening in the present day. I'm sure there'd be entire subreddits dedicated to the fact that Frodo looks too young alone
That being said, the aesthetic of the LotR movies looked if not more accurate then at least more organic. It fit its world better, whether or not that world was an accurate representation of JRR's works. Granted - it could just be the artificiality of touched-up promotional shots that's the culprit here. We haven't seen the actual show yet. Stills can only convey so much, and often distort.