My, my.... aren't we being objective here...
How about we discuss less about assumptions and feelings and more about numbers, which can be found
here? Apparently there is much less (financial) doom than it is being prophecized here.
The COVID-19 crisis and thus working from home might be a reason why there were more bugs.
Slower communication? CDPR learned their lesson and announced the longer season way earlier than they used to. Meteorite Powder changed? A whole news article about it. Monthly developer streams? Conveniently ignored by OP. Hard work on the hotfix of the bugs introduced with the latest patch? Ignored again.
Casually dismissing the completely new introduction of the Journey to sell more and much cheaper cosmetic items may support your point, but is simply in harsh contrast to reality.
3rd party advertisements on offical game forums? I am not sure which game forums you are usually visiting to assume this would be feasable or even normal.
Removing inefficient projects from your roster (especially the difficult update policy of consoles made it quite hard to deliver patches and hotfixes) is nothing to be worried about, but a reasonable and healthy business-decision to increase Gwent's lifetime. Mobile market generates lots of revenue, so they focused their efforts there.
Demanding from people to honestly tell you Gwent is not being mismanaged while making such claims is... daring, to write the least.