The curve, my friend. Everything is relative, and must be assessed on a curve.
Scores of 7.0-7.5 on IMDb for TV show episodes are actually pretty miserable. Only pilot episodes are analogous to movies. The reason is that if people don't like a show they just don't watch it. Perhaps because of this TV episode ratings don't slide as far as movies do over time, but they still slide, so expect those numbers to fall a bit.
You also can't compare this to vintage shows which are rated years after they stopped airing because IMDb didn't come along. You might as well add a half point to every episode for shows like that (ex.
The Next Generation). That's true for movies, too, but it's especially true for TV because TV has always made a point of grounding itself in more obscure issues of the day that grip the common consciousness. TV shows love to make quips and other sly references that get lost in time. The volume of production also means that it's more willing to adorn itself in the stereotypical styles and tastes preferred at the time of release.
Just look through the canceled shows this past year, and it's best to compare shows from the same subgenre for the most enlightening study (Sci-Fi Drama):
https://tvseriesfinale.com/tv-show/ending-or-cancelled-tv-shows-for-the-2018-19-season/
The CW's
The 100 is an example. This show made it to seven seasons, so it can't be that terrible, though we are talking about the CW, here, but even the most recent season (#6) before cancellation doesn't have an episode rated below 8.4. In fact, in all of its seasons, only 17 of 86 total episodes have ever been rated below an 8. Only a dozen have been at 7.6 or below, and unlike
Picard's disastrous episodes, they've have had time to age & slide. :
https://www.imdb.com/list/ls073927025/?sort=user_rating,desc&st_dt=&mode=detail&page=1
Right now all these post-pilot episodes are doing about as well as the canceled shows
Channel Zero, The Gifted, and
Origin, the last of which didn't even make it past a single season, and none of these shows have anything close to the production value
Picard enjoys. It also doesn't benefit from the Star Trek nerd-blinder effect. Remember Del Toro's vampire production
The Strain? Yeah, it was awful. It sports a 7.3.
This Business Insider article is about the worst current show on TV as judged by a synthetis of RottenTomatoes critic and user scores. Almost every show there scores over a 7, and some even above 8 (ex.
New Amsterdam):
https://www.businessinsider.com/wor...fox-cbs-netflix-2018-3#amazon-the-romanoffs-2
Maybe the punctuation mark I should put on this is that
Fuller House is retiring with a 6.8.
The truth is that if a TV drama isn't rated above an ~8.4 on IMDb these days it generally isn't worth watching. Of course there are some exceptions, especially with regard to personal taste, but speaking generally, that's true, and frankly,
Picard won't prove to be an exception.