GCP doesn't really have the Google problem of lacking support contacts. I've managed relationships with GCP for a couple of different companies now (from startup to mid-size enterprise), and in all cases I had multiple dedicated account reps that I could not only get on a phone, but frequently met with in person.
Maybe the story is different for very very small fish, but I had decent experiences with support even at the ~20-person company spending ~5k/month level.
My company spends maybe $4k/mo with GCP, and I have absolutely no idea who my "dedicated account rep" is. I did have someone contact me way back when, but after finding out we aren't VC funded they literally ghosted me.
I don't really enjoy being on GCP for that reason, but I need it for BigQuery, so...
After the last incident (with a week of downtime) I learned that they have a paid support, which you have to sign up in advance so it didn't work for us at that moment.
Now we signed up for it, though I still not sure how it works and how I supposed to contact them in case of an emergency. All I see they charge us something for that support agreement, hope I will never need it.
Maybe the story is different for very very small fish, but I had decent experiences with support even at the ~20-person company spending ~5k/month level.