The green intentions are very noble, I applaud them and think eventually technology will balance out to a significant degree.
My gripe is twofold, firstly if we as a country get net zero by whatever date the powers that be have currently pencilled in,then great, but not only at what cost, but it counts for very little in the global scheme of things if ALL other countries don't do the same.
Secondly the powers that be will not, dare not, acknowledge that post Covid many things have changed and will not go back.
WFH has seen a massive change to commuting and city footfall, office blocks are still going up, shed loads of department stores stand empty, very difficult to repurpose, National railways, footfall down to 80% , revenue down to 70%, season tickets massively down, we carry on with the concrete eating Elephant to get London to Birmingham a bit quicker.
When HS2 eventually opens and they still haven't a clue when, or what the final cost is, I'd bet a large whole nut bar that many/most of the cheaper trains will be taken off the timetable on the old line, to force more folks onto the faster trains, all in the name of freeing up capacity on the old line for freight, this will be presented as a green agenda to hide the financial aims.
Fact is post Covid you can't run a railway on 70% of revenue/80% of footfall.