While it is fine to support the LRT, it is politically impossible to switch back at this point, as if it was switched back to LRT, the province would have to take control of the project again, which means the province will have to agree to build an LRT, which it won't. The Liberals ran an election on the subway, and won't go back on the promise. If the city pulls its funding, they will simply build the stunted subway that only goes to STC and that is a vastly inferior service to what is currently being planned. A switch to a PC government won't fix the issue either, as they too are promising subways.
The promise to accelerate the LRT construction is also impossible from a municipal standpoint, as the LRTs are provincial projects. Municipal politicians have 0 control over Metrolinx projects, accelleration initiatives are something that the provincial government would have to do. His basic lack of understanding of who is managing this $5 billion dollar project shows me that he is severly lacking in knowledge in the transit front, though his knowledge is admittedly more than Fords.
