Given electric cars are responsible for much bigger responsibilities than combustion cars (avoid driving into that bicyclist), there are new concerns here which beg extra consideration.
I am currently a mentor and previously a judge and volunteer for many years at regional events. In all my years I have never seen anything remotely like sexual objectification. I obviously can't know your experience but I would be very very surprised to find this occurring... especially at competitions.
I believe this implication goes against core values of the org and certainly it's local volunteers. I have no skin here except to defend a program that is doing amazing work. My kids are participants and I have contributed to the org for more than 10y.
FIRST and most of its teams are very open to collaborating and supporting rookies new to the org. I recommend reaching out to as many nearby teams as possible and see what support they can provide. Any serious teams are motivated to help as this directly contributes to their team's success during the competitive season. Competitions require a teams to have a pro-social aspect to their operations. Helping other teams is a strong signal in this area.
Additionally, find a nearby FRC competition and volunteer for at least one event (do more, if you can). Wander the robot pit and interact with the teams. There will be a lot of good intel for you there just wandering around and asking questions.
I couldn't agree more. FIRST is an excellent organization to get involved with. Even if you don't have specialities which directly align with the needs of a team, most will not turn you away (especially if you demonstrate passion).
Just a few thoughts about starting a team and/or volunteering:
Starting a FIRST Robotics Competition (FRC) team is not for the feint-of-heart and requires significant time and money investment. This is the sort of endeavor you try when you're either retired or have a group of other dedicated volunteers willing to help you build the team over multiple seasons. If you spend a year or two mentoring/volunteering for a well-established team, you'll get a good sense of what you're getting into. FRC is a bit hardcore.
If no FRC teams exist nearby, FIRST Lego League (FLL) is a good entrypoint, but may not be technical enough for an adult interested in using FIRST to gain exposure to robotics. (It is plenty satisfying to mentor these teams, but Mindstorms can be somewhat limiting.) These are geared toward using Lego Mindstorms for learning robot concepts.
A good middle ground (for exposure to more practical robotics) would be volunteering with a FIRST Tech Challenge (FTC) team. It's the middle ground between FLL and FRC and is _doable_ for a single, dedicated, passionate adult to start (though I'd strongly recommend finding another volunteer to pursue this with).
If getting involved with a team is not an option, seek out nearby FIRST events that you can volunteer at. Many competition events need volunteers and you'll get a chance to interact with local teams and find plenty of opportunities to play with robots.