Ok so I wrote a YT link to it in NFC tools, after eraseing it with same app, Then, tested to make sure the record link worked, which it did, and then went into taginfo and did a FULL scan, now the jumbled data is still present in the full ndef read out, but it appears that when I write something new to it, using NFC tools, if overwrites just the space that the new record uses, which means that YT link is then followed by whatever cut off part of the assumedly trashed remaining ndef record data.
Should I attempt to overwrite it all? I don’t know with what but if it would mean I could get rid of all that junk written in there would it be worth it to try?