This may be wishful thinking, but if I had to guess, I’d guess chamberlain is tightening things up in preparation for HomeKit compatibility for some models.
It looks likely that that is going to require an additional bridge, and that the compatibility will probably be limited to some of the WF remote models.
But Apple has reiterated their insistence that there can’t be open access to an HK – compatible device. Yonomi just had to drop support for the Schlage Sense this month because the integration didn’t comply with HomeKit security requirements.
This is the opposite of the “overpermissioning” issue that was brought up in the recent security review of SmartThings. Apple is limiting access permissions to the minimum required for specific use case functionality.
It may be completely unrelated, but the timing seems more than coincidental.