Some
'fans' want there to be a wedge in this group so badly. The girls don't care enough to think about solo projects right now and especially with the hostility towards female acts trying to 'break out' at the moment it would be
very unwise for any of the girls to jump ship and go solo. I think they're aware of the risks and aren't stupid. However, there is no shame in networking and building contacts while they're still together - all of the girls do this it's just Camila has the more A-list friends. Normani has seeked advise from Mel B, and has even attended Zendaya's after-party for the launch of KC Undercover.
Camila met Hailee Steinfeild through Austin Mahone and that's how she became friends with Taylor, this isn't a friendship that was forced - they've hung out before and liked her enough to hang out with her again.
What I will say is that no one will be going solo for a while. Instead of focusing on that you all should go and stream Worth It they need all the streaming points they can

The girls' relationship with each other is just fine and you guys speculating some 'wedge' or 'bitterness' towards each other is just an assumption based on nothing