This might come as a suprise but, no. If you look into it, climaxing is not just a jerk it ang go thing. for A LOT OF PEOPLE, cis or trans, female or male. Even erectile dysfunction is a problem on the rise for otherwise physically healthy, young men. I’m trying really hard not to come off as condescending or harsh but...please Google this topic if its that hard to believe it takes more than a couple of minutes for people to climax. Even if they know what works for them. And with the added info that bottom dysphoria is a thing that can definitely impact sensation and your relationship to your own body outside of sex- it definitely can affect your nerves during masturbation. So jerking it at work isnt automatically just easy peasy for everyone. And I do agree that it’s...definitely frowned upon. Studies have confirmed some trans men and trans women have lowered sensitivity in the parts of their bodies that developed during puberty that makes them dysphoric as well. Just..so many reasons really as to why someone, if they even do climax- have a hard time with it (no pun intended). And its a bit iffy of you to talk to OP the way you’re doing. Just as a heads up, you should have just taken him at his word instead of being weird about the time it takes him to cum, its just awkward.