I do a lot of copying from Illustrator and pasting into PS 2021 on the Mac. I copy an image to my Clipboard, and open a new PS file using the pixel or inch dimensions I need for my final graphic. Sometimes the image I am copying from AI is larger in size than the file I need. Photoshop used to paste an image in at the size it was in AI, and I would move it within the PS to the right place, and/or resize it if necessary. Now PS pastes it in sized to the file dimensions (as if the file dimensions are a bounding box) rather than pasting at original size. Forcing me to resize the image means that my images won't be consistent in terms of font size. Is there a way to set the preferences so that it pastes in at the original Illustrator size, and doesn't fit it to the size of the new PS file I've created? Please say yes.
If you paste in from AI as a smart object layer it will be a vector Smart Object Layer you should be able to scale it to any size you need. It will be scaled like AI would have scaled it. The smart object is an AI vector file Photoshop can import the image in any size you desire Vector Graphics will be used to render the pixels for Photoshop layer's pixels using the AI vector object.