Not like his last participation in the Giro was any less heartbreaking...
True, but it hurt more to see it happen in France in 2019 and last year.
I've been thinking about it a bit and I really don't think it's a great idea. As you say, it's not like the 2018 Giro was any more or less lucky than the TdF. Even if there's less pressure in Italy, anything less than a podium would be seen as underperforming. But if he went to the Tour and won a mountain or medium stage without targeting GC (let Demare try to win some sprints), that might be seen as largely successful.
I'd love to see him podium the Giro but would be just as happy to see the latter stagehunter TdF scenario play out for him. I know 2020 was an anomaly, but I'm not sure even 2018 pre-pneumonia Tibo could have beaten Hindley and TGH at the Giro. FDJ just don't have the firepower to match riders like Ganna and Dennis.