As I keep trying to tell everyone, this is not how you actually use a thorn.
The thorn is voiceless, and EVERY SINGLE CASE here in the TLC is voiced (as in the 'th' in 'the'). As such, they should ACTUALLY be using the letter 'eth': ð
This represents the voiced dental fricative.
If you are going to make some ridiculous philological point, you should at least be correct about it, especially when you're coming at it from a sense of traditionalist purity.
Æfter all, ðe æctual ƿay to ƿrite þings using old englisc spelling rules is nearly incomprehensible to ðe modern reader, hƿat ƿiþ all ðe changes æfter 1066. It just makes you seem ecgy and ƿyrd
(Note that I'm actually being fairly lax with the previous paragraph to make it slightly more comprehensible)