Am I being too sensitive with this comment?

My boss has been pushing me to do my CPA. I get that it’s good for my career and I was thinking about it but I felt put off by his comments.

So if I do the CPA, I won’t be allowed any time off for it, except using a vacation day on the day of the exam. Everything will be covered by me and the firm won’t help with fees. I think it comes around to 10K or maybe more in total, depending on how long it takes me (all of the modules plus annual fee plus CFE fee). I was considering whether it’s worth it to do it in this firm or switch to one that accommodates more, or if it was worth it or feasible at all right now.

So I didn’t jump forward with the idea and said I needed time to consider. My boss pressed on why, so I said that it is costly and I need time to consider. He replied that 10K is nothing and I should easily have that kind of disposable funds since I don’t have kids and I’m young.

I think 10K is nothing to him considering he makes 3x my salary but it’s a lot for me. I didn’t even know what to respond with, without coming across as snarky so I stayed silent. But it came across as very tone deaf to me. Was I being too sensitive or would you have been put off too?