They sure have. Aussie cricketer David Boon:

https://www.foxsports.com.au/cricket/the-ashes/great-ashes-moment-no14-david-boons-52-cans-of-beer-on-the-way-to-england-in-1989/news-story/615b08ccd6e1d73d7193454b36e03dc9

I’m more talking global purchases. Just the email will probs be ok but if you purchase using that email and a vpn it raises flags.

I’ll be honest, when it comes to online purchases you may find that a protonmail email will require extra processing/fraud checking due to the amount of fraudsters that use it. Combine that with a vpn and it will just be a pain here and there with online purchases like additional ID verification/delayed orders etc…