Seems to be an Avast Browser doodle.
Even though I don't know about their browser, I'd go with this anon
Avast has been known to share/sell user data, which is more than enough for me to reject any of their products.
https://www.consumerreports.org/antivirus-software/time-to-stop-using-avast-antivirus-software/
We didn't have such intense spamming before.
Given the clearly scripted flooding, for now I'd agree to 1 captcha per post on /qr/.