Email from commissionaires HQ regarding using certain web browsers

From my personal research, Firefox is safer and more reliable than Microsoft Edge. Are they simply pushing it because that’s what works best for them? Yet they keep getting jacks this past year. From what I’ve read and used. ME is one of the not so secure.

At home/personal I use DuckDuckGo, Tor, Firefox. No gmail, no google.

Any input is welcome.