I had a robotic prostatectomy at Johns Hopkins in November of 2021. I'm not entirely sure when the hernia occurred, but in March 2023 I had a robotic repair of an inguinal hernia - again at Johns Hopkins. In my case, this was a recurrent hernia. The original hernia was over 10 years ago. Neither the surgeon who performed the prostatectomy nor the one who performed the hernia repair felt that the hernia was related to the prostatectomy. I have some doubts about their conclusions, based upon some reading I've done. I think it's entirely possible, and perhaps even likely, that the pressure from the gas that they inject to inflate the region during a laproscopic prostatectomy could easily further weaken tissues and hasten the occurrence (or recurrence) of a hernia.
The surgeon who performed my first hernia repair had told me that nothing you do (or don't do) is likely to impact the odds of developing an inguinal hernia.