Meg, it seems he thinks that having a picture of the pope at SSPX chapels is lips service, but quoting Fr. Fenton's teaching that popes can never teach nor fall into heresy and can in no way harm the faithful, as they keep right on repeating that the pope is not the pope because he's a heretic, teaches heresy and harms the faithful.
Since it's obvious he is very confused and obviously has no idea wth he is talking about, pay no attention to him saying a picture in the chapel is paying lip service to the pope.
Stubborn, I'm not sure what it'll take to explain this. We don't believe that a POPE can lead the faithful into error or promulgate for use by the faithful something that Father Wathen referred to as a "Great Sacrilege". But, you see, the key thing you're missing is that we don't believe that these men were POPES. You keep assuming (begging the question) that these men are legitimate Popes.
And of course putting the Pope's picture up in the vestibule is nothing more than lip service. Somehow you think you're faithful to the Pope by saying, "Yep. He's the Pope." while on the other sides of your mouth having a chapel that's not under his authority, excoriating him for his heresies, and even when he teaches something true, completely ignoring him as if he doesn't exist. It's a token without any reality behind it. More than anything it's become a symbol of "We're not [evil] sedevacantists." than anything else, but it has no real meaning.