Apple initially wanted to use OneWeb but for (hopefully) obvious reasons the current implementation uses Globalstar instead.
I have no idea why it would be obvious?
I assume the parent means "obvious to the GP, who seems familiar with satellite networks". Still, the parent's ominous style of writing is probably better reserved for a forum where more people would understand their unspoken words.
I assume they are referencing the fact that Oneweb's network architecture is based on 3GPP standards that allow the network to be operated with capabilities matching those of terrestrial carrier-grade cores. There's in theory a lot less friction to using OneWeb for backhaul supporting 'off grid' LTE/5G RANs than there is using something like Starlink.