I feel like we all had super high hopes for the CX-90 & CX-70, especially with the 6 cylinder engine, but after it got into the hands of reviewers it fell short of all our expectations. Not to mention there has been a few teething issues with early CX-90 options.
I get why Mazda didn't make a shorter version for the CX-70, it's 1,000% due to the cost of having a completely different model. It's exponentially cheaper to just rejig the interior a bit and call it the 70. But as everyone has stated, why exactly would one choose the 70 over the 90 when all you have to do with the 90 is fold the seats down and you have a 70. Seems to make more sense to just buy the 3rd row and keep them folded down until you need to use them.