So your opinion is based on:
- your attitude to the risks,
every contact sport player does this
- your knowledge of the attitudes of others
no
- your single example of playing without suffering damage
again, no. I have many past and present friends and relatives still in the sport who at present none suffer
- a single example of a dementia sufferer with no contact sport history.
No, involved in a dementia society with my father and have examples from sufferers their too.
In MY OPINION that is very weak evidence. IMO head injuries are very likely to lead to brain damage.(have you looked into boxing?)
boxing is continued, repetitive strikes and blows unlike rugby
Research quoted at
https://www.alzheimers.org.uk/blog/football-heading-dementia-risk is very strongly supportive of this.
Agree with this and the risk
(p.s. it's quite funny to make this accusation:
Your posts are
ripe with argumentative rhetoric! Just my opinion, of course

)