A couple of months ago Catalin Cimpanu, one of the
(very few) reliable infosec-oriented journalists published
this article in ZDNet. It's worth a reading as an introductory
material:
https://www.zdnet.com/article/dns-over-https-causes-more-problems-than-it-solves-experts-say/

The Dutch National Cyber Security Centre document
mentioned in the Catalin's article is here:
https://english.ncsc.nl/binaries/ncsc-en/documents/factsheets/2019/oktober/2/factsheet-dns-monitoring-will-get-harder/Factsheet+DNS-monitoring+will+get+harder-v1.1.pdf

Regards,

Enrique