[D13Fd]

That's untrue. Ergotron LX arms for example hold big monitors perfectly and last basically forever - currently priced <$200:

https://www.amazon.com/Ergotron-Monitor-Monitors-Up-Polished...

[Wistar]

I have several Ergotrons for a few years now, mostly the two-arm models with 27in monitor pairs. My only gripe is that cabling them neatly is difficult.