The backups on Android are near useless as well - they expect users to remember and save a massively long string of numbers (that are pre-generated, so they can't even choose a password they remember) and then they only do backup manually and onto device storage where it'll be gone together with everything else on the device if it breaks or dies.
Getting that backup off the device is yet another manual process for most users they need to think about.
Compare this to Telegram: user doesn't have to do anything.
Compare this to iMessage: user doesn't have to do anything.
Compare this to WhatsApp: user just needs to click agree.
The last two even save backups in an E2E encrypted fashion unreadable by servers.
Getting that backup off the device is yet another manual process for most users they need to think about.
Compare this to Telegram: user doesn't have to do anything.
Compare this to iMessage: user doesn't have to do anything.
Compare this to WhatsApp: user just needs to click agree.
The last two even save backups in an E2E encrypted fashion unreadable by servers.