I find it surprising that existed. Not an unreasonable change.

For the lazy, when a game sold "advanced access" as part of a pre-purchase; game time before release didn't count to the 2h refund limit. So you could play eg 10h of a game, then refund it on release. This is them fixing it.

I kinda like this.

It was weird that so far this wasn't being done, and on top of that this might get the odd person to not pre-purchase something which is always a win.

So Valve basically killed pre-releases and beta versions.