Yes, Ewan McGregor has seen your erotic Anakin/Obi-Wan fan-art
"It's always a bit of an eye-opener," McGregor noted re: the fan-art that occasionally shows up in his inbox

You know how it is: You’re Ewan McGregor, well-liked star of stage and screen, doing your best to fulfill your promotional obligations for your new Disney Star Wars series Obi-Wan Kenobi. Amidst getting married, getting COVID, and just generally McGregor-ing around, you take time to set up a new, in-depth profile with GQ in which you manage to come off—basically effortlessly—as both accessible, thoughtful, and reflective. It’s going great! Then you mention that people send you erotic fan-art of you and Hayden Christensen and whoops, hey, there goes the rest of your day.
So it was for the actual Ewan McGregor, who did all of the things we detailed above recently—including the bit where he reveals that dogged fans of seeing the Light Side and Dark Side mix it up sometimes send him images of himself and his recently reunited Star Wars co-star, apparently dueling their fates.