The right granted by the TOS elapses when you cancel the respective service, or when you revoke your consent (in which case the service provider may possibly cancel the service). (Some TOS are also simply illegal to begin with.) That’s what the GP is referring to.
No they don't. I don't know where you've gotten that information, but none of it is correct.
I mean, a TOS could be written that way. But they're generally not, because companies don't want to self-impose limits like that.
The TOS usually has something like "grant the platform a perpetual, worldwide, royalty-free, non-exclusive license to host, display, distribute, modify, and otherwise use that content in connection with the service".
See the word "perpetual"? That's standard.
A TOS cannot override https://gdpr-info.eu/art-17-gdpr/.
And the GDPR doesn't apply outside the EU.
It sounded to me like you were making a general statement about TOS's.