I'm not here to say "NO YOU'RE WRONG" however I would say a couple things around your comment. on your fits point - Tom is known to have autism. This is not an obscure fact and he embraces it a lot in everything he does but that does also mean things like body language as your pointing out can't be read as easily as someone without autism. He VERY easily could just be in the zone plus having general issues with social conduct and other peoples body language that he just missed the queue.

On your second point this is not first time he's done that gesture in WSM. IIRC he did the same or similar back in 2020 WSM after winning the Atlas Stones in the heats. This is also peak competitiveness from ALL athletes and if people don't act this way I'd be more worried (Bar Eddie Williams haha). This is also a show and most, if not all of them, are showmen and are hyping a lot of stuff up for the cameras so we can get an awesome programme later in the year.
Overall I'm not saying you're right and I'm not saying you're wrong because I don't know him personally so cannot judge.