I doubt he's only running web apps - otherwise, he wouldn't be looking at a "gaming PC", and could settle with a run-of-the-mill $500 crap-box.
I hear you. That said asside from CAD and GIS, I highly doubt most PCs for "work" really need to be gaming PCs.
Just saying. When I am at work, I use Chrome, Edge, Teams, Zoom, WebEx, MS Office including Visio but mostly Outlook, Word, and Excel. Other than that I use SecureCRT and rarely PutTTy/KiTTy, and very rare use of Agent Randsack (to search), MeldMerge to compare Text Files, and occasionally tools including Active Directory Sites and Services, Active Directory Users and Computers, DNS, and DHCP snap-ins, too. Also sometimes the Angry IP Scanner and Zenmap. Rarely Remote Desktop. Very Rarely TFTPD by Ph. Jounin, and also the Solar Winds Engineers toolkit, which probably isn't worth the renewal fee. Very very rarely I use DameWare Utilities. Some Notepad2 and Notepad++
The above is pretty much the entirety of what I run. I have days it is only Chrome, Outlook, and Teams. Just saying no need for a Gaming Computer for all of the above, which is vastly more than most jobs probably use.
My current setup is some Dell Latitude laptop and a Display Link docking station with two 27" monitors. The setup hasn't changed in a decade though I am probably on the third laptop in that time.