if they had decided that ONLY subscription could access it, then maybe a breach, maybe.
But you still have access. even the free users have access. in browser, not inside sketchup, but still, free access.
The only difference is that the old chromium engine in Sketchup21 is not supported.
Fun fact, websites like netflix only support browsers for about 2 years. The 3d warehouse support them for more than 3 years.