Consumers having rights doesn’t change the type of economic system. You could have consumer rights under feudalism and that would still be feudalism. The right to mend you own fence wouldn’t make your feudal lord any less of your feudal lord. Heck and that example is even a worker right not a consumer one.

He is in the third-party repair business, so it makes sense for him to promote right to repair to protect his industry.

That, and as he often says, in an ideal capitalist world for both producer and consumer, the best way to retain business is to keep the customer happy, and an easy way to do that is to produce a quality product and not screw the consumer over, lest the product break or total itself and the customer go elsewhere for repair or replacement of the broken product. Satisfied customers in the first initial sale can lead to those customers returning often and recommending the business and product to others, leading to much more business (and profit) overall.