Is this happening more and more or is it just reported on more? I feel like in the last few years, I've heard of multiple ground stops from various US airlines due to technology issues.

Hopefully it's not a Crowdstrike-like "technology issue" like Delta dealt with last year. As a traveler during that time, it was a nightmare. Good luck to anyone traveling over the next 24hrs!

Let me guess, the "technology" is from the 1980's.