I don't get it. If people want to "follow Abp. Lefebvre", they should stick to the 1962 liturgy, because that is what he used and ordered his priest to use.
If you prefer the 1954 liturgy, you don't follow Abp. Lefebvre, and it is fine. There is not one single correct way to act in the crisis. It is puerile to think like this.
In my opinion, what people should not do is to use the 1954 liturgy, make agreements with Rome, etc. and still say that they follow Abp. Lefebvre. If you want to honor his memory, don't twist his words and make up things about him.