I got burned by App Engine so I get the vibe but frankly a bot could post this same argument on every Google thread and it wouldn't move the needle one way or the other.

Would I put containers on Google Cloud in return for free upload bandwidth to YouTube and use their CDN because it was easy? You bet your ass I would. If you can't tell the difference between a novelty thermostat and a major, long-term, strategic corporate investment then you've got bigger problems than switching DNS entries for a CDN.