Yes, 996, quite right IMHO, but I think there is a CRM issue somewhere.
The CPL only really covers a higher standard of technical knowledge and/or ability - it does not legislate as to whether you have any common-sense or not. I have known stupid people in many "intelligent" trades, which includes doctors and solicitors, and there are many stupid pilots out there as well.
In practice, if Pilot B wants to take over and A doesn't want to hand over the controls, there's not a lot that can be done, since taking hold of them in such a marginal situation may just make matters worse. If he was going to do anything, it should have been done much earlier - of course Pilot A should have found the nearest landing spot much earlier as well.
"The least experience press on, whilst the more experienced turn back, to join the most experienced, who didn't take off in the first place."
Phil