XF 2.1 Insert image from XFMG into thread (or elsewhere)

[frm]

I would like to insert an image from XFMG into an XF post (or anywhereelse), but I don't like the embed way as it resizes with CSS and images are large.

Is there a way to maybe insert an image like /media/pic.119/thumbnail?d=1599126118 into various sections which would dynamically generate a thumbnail like XF does after you upload as attachment and click "insert thumbnail" wherein I could link that inserted image to /media/pic.119/full?d=1599126118?