The legal safety mechanism is the license. They gave you software under a certain license and you're in the clear as long as you follow it. You don't have to delete it if they give different software under a different license.
If you do need constant updates, you may trust forks more not to switch license, but forks tend to disappear at about the same rate that originals switch license, so why does it matter? Such is the nature of relying on free stuff - you're at the mercy of the one who hands it out.
If you do need constant updates, you may trust forks more not to switch license, but forks tend to disappear at about the same rate that originals switch license, so why does it matter? Such is the nature of relying on free stuff - you're at the mercy of the one who hands it out.