Listening to the RiskyBusiness podcast, for instance, it's incredibly obvious that the community is fully in the tank for the Russian attribution hypothesis, and habitually carries the water for FiveEyes IC.
Meanwhile, we mere plebs have very little evidence to judge the community's beliefs by, other than blind faith in, say, CrowdStrike.
If the infosec community would like to actually state their case to the plebs, I would love to hear it. But all I've ever been able to find is "the phishing email is a little similar to something produced by APT28, and there was an IP once used by FancyBear like 5 years ago, so it's 99.9999% certainly Russia".
And nobody seems to care enough about those outside the community to even try to state the case.