I see your sarcasm backfire as most you are listing is just Microsoft dog-food with no real usefulness. The only good thing in your list is Excel, all the rest is bloatware. Teams is a resource hog that serve no useful purpose. Skype was perfectly fine to send messages or have some video call.
I admit I don't have experience as an IT administator but things like managing emails, accounts, database, manage remote computers can be done with well estalished tools from the linux/BSD world.