It's because they're measured on something, unsure which metric, but it's definitely not how helpful they are to you.

Don't know about GCP, but our AE on AWS was also continuously rotating, and as best I can tell, their job was to figure out what we are planning to build, and to ensure that we should always use <INSERT AWS SERVICE DU JOUR> for that, rather than a competitor product or build it ourselves.

Exactly the same experience for us as well. I just don't bother with them.

Before I just cut them off entirely, I used to tell them my primary concern was cost savings and that I wanted them to recommend ways I could cut 25% off my bill every month and watch the glorified salespeople fumble over trying to avoid that conversation.

It’s ok though, Claude helped us cut >45% of our monthly costs. I’m surprised they haven’t been beating down my door after we made that level-shift. Probably in AE transition. ¯\_(ツ)_/¯