TOS was cancelled for much the same reason. It's what happened to it in subsequent years through syndication that changed things.
As did DSC. I'm looking at SNW, PIC, PRO and LDS... none of that would have happened without DSC.
I'm not even a big fan of it, but I don't understand your need to dance on the ashes. There's a discussion to be had here, a discussion which is taking place here, that is more interesting than playing tit for tat in regards to how many 'missions' a crew completed somehow being a benchmark of quality.
Honestly, I'm neither happy nor sad that DSC has been cancelled. It had a good run, I don't feel it's going before it's time and 5 is a good number. It is what it is.
What I don't get is the pathological desire some, including yourself, have to score points or 'win' the discussion.
Like:
'Nyah, nyah! I hate this show and I am glad it has been cancelled! TOS was better because they made more trips in the transporter!'
What does that kind of thing add to anything?
You can surely do better than that?