For the most recent "state of DANE" post to the dane-users mailing list, see: <Update on stats 2021-12>. There'll be another update on Monday night showing an uptick in growth in January.
The Microsoft rollout is actually under way now, and some receiving systems are reporting increased TLSA query rates from MIcrosoft IPs. So the delay is finally behind us.
The SecSpider tool is woefully out of date and not actively maintained with comprehensive upstream data feeds
Much better...