It's almost always better when they have 0 or maybe just 1 mactor in the cast and this season bears that out imo.
That said it is pretty awesome that they managed to cast some people who are comically bad at strategy.  Xander boneheadedly announces he has no vote and then Tiffany out-awfuls him and basically saves him with her paranoia.  I get that the other 2 women could have just voted Xander out anyway but burning Tiff in that way could lead to a 2-2 vote next time out.  Did they clarify if Xander cannot even do his dice roll since he has no vote?  If not he totally needs to roll the bones next loss.
		
		
	 
		The casting approach changed a lot starting with S39 after Lynne Spillman, who had been casting director for the show's entire run, lost a power struggle with Jeff and was fired. She loved casting 
mactors and other young good-looking people who had the potential for showmances, while Jeff was more interested in people who know the game and have strong personalities. She did not like to cast married people under 30 because she wanted those people to have potential for showmances; she didn't want to cast Angelina for S37 for that reason and Jeff overruled her. Ghost Island (S36) was full of 
mactors who had no idea what they were doing, and it was awful (except for Chris Noble, who was comedy gold). 
But just because they are casting more superfans does not mean they're mostly casting logical gamebots. They definitely seem to try to find people who are chatty and/or lack self-awareness. And of course people think less clearly when they have less food, and there is even less food than usual on this season.