I’ve no use for this Pope; however, why shouldn’t he meet with sinners.
I’ve a former student who was also my office aid who was openly bi-sexual. I was clear that I did not agree with her “life-style” but my wife and treated her with love and kindness. There’s a concept about “Hating Sin but Loving the Sinner” that may apply...
I don’t think meeting with sinners per se is the issue.