One of the complaints when Enterprise was first out, iirc, was that it broke canon and the timeline of Trek. Things like meeting species before they should have and stuff like that. I'm not a hardcore enough Star Trek guy to relay all the details but that hurt it viewer numbers amoung the hardcore fans as I understand, and I think that contributed to it not getting seven seasons like the others.
If you set that issue aside, I'm actually rewatching it as my exercise distraction show

, I like it. It has some lame episodes for sure in the early seasons, but honestly every Star Trek show seems to suffer from that. I didn't think TNG was worth watching until about season 3. Its first season was painful to watch imo. Enterprise's first season is certainly less painful! I never really took to Bakula as Archer, but he was okay and I liked the rest of the cast. Even Phlox grew on me
I am still waiting for someone to make a really good show based on Starfleet Intelligence characters. It think they could do a lot of neat stuff with that.