Microsoft being unreasonable again

https://learn.microsoft.com/en-us/MicrosoftTeams/teams-classic-client-end-of-availability

Not that long ago we upgraded our (classic) Teams client on our Citrix (server 2016) farm to have the supported multiwindow version. The other one would stop working (januari this year).

Now it turns out that in a couple of months Teams classic becomes unavailable and the modern one isn’t supported on Server 2016.

Unless I missed something this seems like a rather unfair move from Microsoft.

I don’t think many companies can manage an upgrade like that in a short time.

All additional information on this matter is appreciated.