thank you for your reply!
yes in many cases it will be really bad but I in some cases not - so it is to minimize the work. I’m migrating from squarespace, where this was an option and it is not awful how it is cut mostly. Also, on the collection pages I had the option to have images have the same image ratio and it looks fine.
I just saw that it might be helpful to group together the portrait images and before/after group landscape images in the product card, (when it is not possible to change the ratio of the image so much) - to avoid the jumping on the screen. Hope this helps on the cumulative layout shift rating also.