robsmith41nj For many if not most of us, we're not objecting because we just don't like it, but because we represent the organizations that employ us, and those organizations depend on the very functionality Microsoft is gutting with this version, and will soon be forced upon the deployments we support (not the 2029 no-longer-available date, but much sooner in terms of install) with no solution yet available. We depend on Outlook. If New Outlook is better than the old one (and there are some positives, such as a better manageability/deployment story), fantastic, but there are tons of missing features and regressions in functionality that would be extremely disruptive. If Microsoft had a better track record for these transitions, it would be one thing. But they have an established history now of declaring things as having "feature parity" long before anything of the sort (if ever)--Skype for Business to Teams, Classic Teams to New Teams, etc. along with similar examples like the Public Folders debacle.
So no, this is hardly mere whining. These are people tasked with supporting Outlook trying their best to get the Outlook team to hear them about specific, under-addressed and unaddressed issues that, if this plan (and history) holds, will have major impact on Microsoft's customers.