I want sexton playing well, and I think on form he's the best of the lot in terms of his attitude, work rate and general game management
However I would really worry about him in a Lions tour with less rest time due to reduced squad size, and the physicality and potentially dirty play that often comes from the warm up teams. The guy is a legend, but isnt that 3 times since February he's been sat down for concussion? He loves rugby with so much passion, I think a summer off may do him the world of good, just to prevent any big injuries, particularly if he is indeed planning on playing in 2023