MPs are not transport infrastructure planners and they can only fund projects which are presented to them. You can fault them for many things, but not for the self-defeating delusion behind every single passenger rail investment project in this country (except, of course, VIAFast, which was surely an inspiration for HFR), which in their hubris treated conventional (i.e. non-HSR) intercity rail service as obsolete rather than
the pre-requisite for HSR. It is those people who decry the lack of HSR the loudest (honorary mention goes to Paul Langan), who are the most guilty that four decades of talking about HSR have not resulted in any tangible progress towards that vision...
PS: now that I think of it, the emergence of HSR proposals in the mid 1980s and their promise to replace rather than augment the conventional passenger rail network (the same narrative used by those people who promote
Gadgetbahnen like Maglevs, Monorails or Hyperloops) certainly contributed to the momentum which Mulroney exploited for the January 1990 cuts, meaning that, if anything,
the pro-HSR groups have had a negative effect on the quantity and quality of passenger rail service in this country...