Perfectly said. Discovery was an instantly available target for the ire of every TOS fandamentalist and 24th-century-or-bust stalwart that had soured over years of not getting things exactly their way. They inhabit an echo chamber that gives them support and causes them to assume that their umwelt is in fact some universal truth. There was and is absolutely nothing that show runners can do to break through that level of toxicity except to bulldoze over it and embrace new viewers and keep providing a good show for the existing fans.
You can't win with those people. If you cater to them you're accused of fanwank. If you chart your own course you're accused of apostasy against St Gene. If you make the barest most subtlest of hints you're bringing an old cast member back you're instantly told your project is doomed. If you get your show renewed, you'll be told you're not getting renewed again.
Yep. No different when the Kelvinverse films premiered either. Same exact highly predictable and tiresome behavior.