I’m sure your experience of your own hometown is accurate, but as a person who’s visited Valencia a few times I’ve found the transport to be excellent: my whole family used the metro to get around without any hitches, and we were always surprised by how clean, quiet and efficient it was.
The train between Valencia and Alicante was like boarding a luxurious airplane: an attendant ushered us on and came around with a food trolley. The ride was smooth and almost silent, and the ticket price included small extras like a free pair of headphones for listening to the onboard radio. This was all just regular economy.
I think it may be a national characteristic to rundown your own country, as my family background is also Spanish and all my relatives always say Spain is a ‘mierda’ (shit) and speak lyrically about how wonderful everything must be in my current country (Sweden), but in fact the last few weeks the train service here in Sweden has been sporadic and continuously interrupted by various problems, as it often is both summer and winter. A Swede will rarely admit this to outsiders though.
So I’m willing to give this initiative a very enthusiastic welcome, instead of instantly dismissing it as a gimmick, or gloomily bound to fail.