Actually, to be accurate, the thread you refer to does not suggest that paying for a type rating has 'a massive detrimental effect'! The ramifications for pay and conditions comes from those fools who work for free in the hope that gaining hours will help them. What they don't see is that when you work for free you are saying that your work has no value, therefore why should anyone ever pay you?
SSTRs are a legitimate method of potentially improving your employability. Whether they work or not depends on who you talk to. This is quite a separate issue from companies forcing you to pay for type ratings which is, IMHO, wrong - although it has effectively been done for years. Even the BA Cadetship made you pay for it with a reduced salary.
Scroggs