It's Matthew's rule, not mine. But I think I can guess why Matthew doesn't allow them, and I agree 100% with him. The reason home-aloners shouldn't be allowed is because they reject attending the TLM unless it's celebrated by someone who "is not in heresy" as home-aloners such as David Landry put it. So if they have access to an SSPX TLM, instead of attending they'll say "I won't attend because I want a TLM said by sedes" or something to that affect. Refusal to attend the TLM if you have one in your area is a violation of the Third Commandment. If a TLM said by a sede group (such as say, the CMRI) was all I had I'd attend it in a heartbeat. Why reject the Traditional Latin Mass, the Mass of All Time?
BTW s2srea, you're thinking of "Pope" Augustine II.