Sticks and stones, plenty more in life to be concerned about, than comments from a former jockey. I've observed many jockeys over the years, good, bad, all sorts.
Of all, one of the best we've ever seen, CWJ, stands out for not just his consummate skill but his empathy for his mounts and his genuine love for the animal...the animal that, over millennia, has pulled our carts, ploughed our fields, died in the battlefield, carefully carried children and the disabled, and run its guts out for no good reason other than we ask it of them.
Some others, also very good jockeys, show their class as humans by smashing their mounts over the head and/or ripping the bit through their teeth when annoyed or having difficulties.
So a critique, however minor from a 'jockey' who thinks horses cheat is nothing to be bothered about.