I will never ever leave Firefox voluntarily for an ad-infested Chrome alternative.
Not to mention the million hooks Google's apps put into Chrome search, browsing history, etc. If you use the Google Search launcher to open an app, it sends which app and the time it was opened to Google!
I'm disappointed that the death of Firefox OS and Ubuntu phone leaves us with little choice for FOSS smartphones.
Heck, even Microsoft Edge can run ad blockers now. There's no shortage of options if ads are the primary thing keeping you away from competitors.