Not true.
The Netherlands has very high cycle use, very low helmet use and very low rates of cycle fatalities measured by billions of kilometres cycled. However, they have had a recent uptick in the number of fatalities in the over 80s group, linked to greater use of electric bikes.
As cycling in London has boomed, the number of cyclist fatalities has stayed between about ten and about twenty per year, actual numbers, not per billions of miles.
Year | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 |
Thousand daily journeys | 270 | 270 | 270 | 270 | 270 | 270 | 270 | 290 | 320 | 320 | 370 | 380 | 410 | 470 | 470 | 490 | 510 | 540 | 570 | 580 | 590 | 610 | 670 [43] | 730 [44] | 721 [45] |
Killed | 18 | 15 | 15 | 20 | 12 | 12 | 10 | 14 | 21 | 20 | 19 | 8 | 21 | 19 | 15 | 15 | 13 | 10 | 16 | 14 | 14 | 13 | 9 [46] | 8 [44] | 10 [45] |
Seriously injured | 485 | 480 | 521 | 571 | 560 | 595 | 469 | 399 | 434 | 387 | 414 | 332 | 351 | 373 | 446 | 430 | 420 | 457 | 555 | 657 | 475 | 432 | 378 [46] | 454 | - |
As the overwhelming majority of cyclist fatalities also involve a motor vehicle, and motor vehicle use has not shown significant changes over the same period, it sort of suggests that the problem lies with drivers, not cyclists.