The difference with 1.1 and 4 was 1.1 knocked out the game for everyone! Season 4 only knocked out the game for a few (vocal) people.
The forums only represent a small % of the playerbase, so you really have no idea how many people were affected by the S4 bugs. However, juding from dstahl's comments below I would infer it was more than just "a few vocal people":
Originally Posted by dstahl
To address another point someone made, we are absolutely learning from the code merge that was Season 4 and I'm being very vocal about how much it has cost STO and how we can avoid it in the future.
If they go that route, it'd be emblems. And not enough to buy anything too snazzy. C-Store points would cost them real dollars.
Not necessarily. Sometimes giving people C-points makes them think "wow, I've almost got enough to get X item, so I'll just buy a few more and I can get it". And then that person spends money, when they otherwise wouldnt have.