Since they said they have "5g home internet (about 10 times faster than the best wired option and 3 times cheaper)", with "shit ping", I assumed they meant 5th Gen cellular as their internet service at home.

Only a couple years ago, did we finally get a cable drop in our neighborhood, to actually give faster service than 4G LTE. (There's still no fiber here, at our location in central Denver.) Because the cable company (Comcast) doesn't offer a reasonable rate, we use line-of-sight wireless to a local mesh operator. Until then, we used 4G & 5G cellular, as our home internet. It was shit for reliability, but when it worked, the peak speeds beat any residential service available, by a pretty wide margin. Of course, those peak speeds turn to timeouts whenever the highway fills up (& our 5Ghz WiFi still flakes out too, as does the 2.4 Ghz wireless camera, & pretty much anything else that isn't shielded).

There was no point in running ethernet, with that setup; it was never going to be stable. I still had to run 2 hardwires though: one to the Sony PS2, & the other to an ancient beige switch by the IBM PS/2.

Some people in the mountains & such, are on "5 Gigabit" wireless internet, but most seem to be on even lower speed plans than that. I'm really curious which @Default_Defect@lemmy.world has, because 5th Gen cellular is literally the best internet a lot of US residents can get, despite the abysmal terms & throttling that so many providers employ.