Google is not a good company by any means, but when you buy their Pixel it’s your device. You can unlock its bootloader and install whichever OS you like. And even with the stock Android you’ve always been free to do anything. There are no features built into Android that lock you in and force the other side to buy one as well. Whereas Apple’s iMessage is available on iPhones only, peer pressuring others into buying one. Saying that buying an iPhone and an Android phone is morally the same is dishonest at the least. Especially since Android is just an open platform and each manufacturer is using their own modified version. Brands such as Xiaomi or Huawei went even beyond the software skin and optimized their ROMs to run especially well with their own hardware. If you buy an iPhone, you are forcing those around you into buying a specific device made by a specific company that loves playing Monopoly a bit too much.