I watched the whole show, and while I wouldn't describe the series as good, they had a few good episodes. My favorite is s5e6 "Whistlespeak"

the continuity issues is what caused so much cirnge, Klingons having cloaking tech century before they were suppose to get it from the romulans, plus thier appearance is very unklingon-like, they look like xindi reptilians.

they followed the whole convoluted bs, ending a big bad in the end of the season which turns out to be a letdown every season.

they end up pushing him into the background by 2nd-3rd season until he dint do anything notable anymore in favor of the female leads which are kinda bad at acting.