Its not underpowered for average users, but it’s not meant for professional uses beyond basic office work.
Similar to the mini they offer the Studio which doesn’t have a monitor built in https://www.apple.com/mac-mini/compare/?modelList=Mac-studio-2023,Mac-mini-M2
Then for the higher end uses they offer a more typical tower format https://www.apple.com/mac-pro/
We heard this same talking point in 2016 but somehow we still had a 2020 election.