ettac orrazib si eman ym: The way I see it, is that GOG Connect only ever ran a specific times anyway. At no point did it run continuously or regularly.
It hasn't been used in several years because they haven't decided to use it. They may use it at some point, or they may never use it again but there was never any suggestion that there would be X number of games per year or anything like that.
It hasn't been several years, at most it would be somewhat over two years since it last listed a game.
And like you say it was an irregular thing, often with many months between offerings. Over time the gap has lengthened.
We've been getting threads like this for years, even when it was still working now and then.
GOG may never use it again, but despite what they are saying at the moment, they have clearly left it as a future possibility.