So you’re blaming a company for a person not on its payroll writing a weird and dumb email? Ok.
They did do a “slap a logo on things”-thing with FOSS Android apps for their librem.one service. On the other hand, they do actually pay for software development for the Librem 5 in a way that helps the entire #linuxMobile ecosystem - a PinePhone or a Snapdragon 845-powered Android phone running postmarketOS would be way less useful without Purism’s investment. It’s all quite grey.
It should be. With zram, I can use similar software even on a 2 GB RAM device somewhat comfortably, unless I open too many tabs in Firefox.