That’s not even necessary.

On your phone, go to Settingd -> Facebook -> photos -> limited access

And you can choose which photos Facebook has access to.

When you first give an app access to your photos, you have the “Limited Access” option.

I do that, but I wish I didn't have to. I have to flip through the system image picker twice every time I want to share a photo.

	▲	JustExAWS 5 days ago \| parent [-]
		Which app do you use doesn’t let you paste an image you copy from the Photos app? All the apps I tried - Facebook, Messenger, Slack, Notion, WhatsApp and LinkedIn. There is really no need to use the picker at all.