I am still on Vercel (yes I know, trying to migrate off...) and it gives you automated alerts when there are anomalous traffic spikes. Funnily enough, I have had about 10 scrapers from various places scraping the site in the last week.
To be honest, I don't think I've seen anyone mention Vercel here or on Reddit in any way that could be construed as positive in quite awhile.
Most of that is tends to be over pricing or Next.js, when there's probably loads of quietly happy people using it, but... Those people are quiet, so it is hard to tell.