The biggest problem with county cricket not just now but over the decades is that it produces cricketers to be effective county cricketers . That means they have to be durable and slog it out for 6 months playing up to 18 championship matches in a summer and one day cricket in top.
As a result young quick bowlers very quickly revert to bowling medium pace and because of the amount of cricket played the "bits and pieces" all rounders who can play all forms of the game are invaluable.
Having said all that the ECB have made a Horlicks of the schedule and the counties have sadly gone along with it all for a few quid in the coffers.
You’re right and the bottom portion of your post is the reason for the bit you said in the first three quarters of it.
The Championship has largely been pushed into the margins of the season - which means poor pitches, difficult conditions and ultimately substandard cricket.