Not only now the PSG be favorite to win Ligue 1 even before the league starts, they have become a strong candidate to become champions this season, so I think there is nothing surprising about their current statistics including consecutive wins at the start of the season, PSG has a squad that is very capable and they are still better than the current rival teams, the quality of the squad and also the financial differences have been a strength for PSG to be able their to easily win Ligue 1, but unfortunately the greatness that PSG have in Ligue 1 is not comparable to their performance and mentality in the Champions League which very bad so far, to be honest if we talk about Ligue 1 of course we can't deny that they are the strongest candidate to be champhionsip, while other teams are currently only competing for a place in the UCL, but for this season Champions League, I personally don't expect much from PSG.
I get what you're saying about PSG being favorites to win Ligue 1, they definitely got a strong squad and all that. But you know, their performance in the Champions League hasn't been all that great, so I ain't expecting much from them this season. Gotta see how it plays out though, never know what could happen in football, am I right?