The first one is not actually true although it feels that way, riders will do around 80-100 meetings a year which they have done since the late 80s they just do more abroad these days, remember riders use to race around 40 meetings in uk for just one club, now they race for 2 clubs and still don’t do that amount and the second is not really true either,bike speed is pretty much the same as the 80s it’s back wheel speed that has increased which I believe is the biggest contributor to the high speed crashes