Since you're running Fedora, you can probably do something like:
sudo dnf install openconnect NetworkManager-openconnect
The official PulseSecure client for linux manages to install but then fails to launch with ubuntu 16.04...
So I was lead down a path where I needed a script that would answer host checker.
But couldn't get that working and gave up, only gave it one evening so far.
"Can you please share your screen?"
Not to mention that you won't be able to share if you're using a tablet.
Obviously it's not for everyone but I've made it work for my situation.
By applications I can only remember trying Google screencasting, through hangouts to youtube for example.
But I think I tried one more that I lost the name to.
Is the situation any better elsewhere? On windows at work we constantly have issues with desktop sharing over skype freezing and have to fall back to WebEx and deal with it's sound not working properly, we'll often end up with a hybrid of voice calls on skype and screen sharing with webex and all the wasted time dealing with that. I had an hour long meeting on WebEx yesterday where I could barely hear anyone.
These aren't things I've tried to do on linux so I can't comment on how well supported they are, but let's not pretend they work seamlessly in the microsoft world either.
I loaded Fedora 26 and 27 on my new X270 and things went flawlessly. I won't say there are never any issues but it's pretty plug and play these days.
But I still have my Macbook pro at the office, it never leaves the desk there.
My ambulatory laptop is a Thinkpad X260 running Fedora.
I have none of the issues described in the article
But you do raise valid points. I work in an organisation that loves Microsoft and store-bought solutions like Skype for Business.
My answer is to use a tablet for video conference calls, a Pixel C in my case but any modern tablet will work.
So with that solved the only major gripe I have with using Linux professionally is all the enterprise VPN solutions that in one way or another require Windows.
Juniper JunOS pulse for example, I haven't been able to get that working on Linux. They do have an official Linux client but like you said, it requires some finagling.
Other than that though I think Linux has come a very long way from the old mentality that you had to spend long nights getting everything to work.
I used to do that, but the last 5-6 years I've been too busy with work to bother. So I was using mostly Apple until about 4 years ago when I bought a Thinkpad X230 and started using Fedora.
Another issue that doesn't come up often but is quite debilitating is when I need to screencast to someone. Wayland isn't supported anywhere so I have to logout and log back in with X just to screencast.
None of the other issues you mentioned affect me, projectors and hdmi screen sharing works just fine.