Is Mechanical worth pursuing in 2025?

My interest and field I want to dive deep into is motorsport engineering and R&D in the field of automotives. I believed Mechanical would be a good field to pursue that, however I am being advised the opposite by many people. They're convincing me to take ECE/EEE/CSE instead of Mechanical and saying that I can change routes even through these fields as pursuing Mechanical doesn't have much scope in 2025 with growth in automation and AI.

I just have a few questions which anyone pursing any of the above mentioned fields can answer:

• How dynamic is Mechanical as a branch. If unfortunately I lose interest (highly doubt it but just as a precaution), is it possible for me to still have my options open towards CSE/EEE/ECE related jobs?

• Does pursing the above branches (CSE/EEE/ECE) allow a smooth to transition into Automative Design and R&D and the fields I want to work in?

• 4 years down the line is their any level of prediction by people pursuing education/jobs through Mechanical, that will it continue to grow or dilute in the future?

I am not as placement-centric in making my decision for a branch. I also plan on pursuing masters in the future but keeping that aside, I want to study/work towards something that excites and drives me. I personally take a liking towards Mechanical, but keeping in mind opinions from people already engaged in such fields with more experience than me, I would like to form a rational decision than an impulsive one.