It’s about the thousands of things you have your old gmail tied to. Yes I use forwarding to my new proton mail but sometimes it doesn’t work cause it went into spam or smh and I must open gmail.

Sometimes also the icloud aliases stuff stops working and I don’t want my proton mail to be associated with too much ads so I again type the old mail…

To be honest I was supposed to use proton but I use apple icloud aliases stuff most of the time because I don’t want to disclose my most important and secure email address on some trashy sites. So yeah that google switch didn’t work out all that good I guess I just changed the tech overlord. At least the new one didn’t want to monopolize the internet I guess