Schapps is barely more trustworthy than Johnson.
The major issue underlying most significant railway industrial action over the last few years has been the retention of guards on trains, which the public have supported strongly. The strikes have not been about greed or unreasonable demands, but about safety and, yes, job security (one of the fundamental reasons for Unions' existence). The strikes have not been all-out wild demands for, say, the re-introduction of wheel-tappers; they have been about a serious and pivotal issue - the adequate and safe staffing of trains. They have also thrown into sharp relief the reliance of the railway on non-core hours working and the lack of worthwhile/realistic staffing margins to cover absences.
The need for the TOCs to post their shareholders' profits means that they need to shed costs, and the Tories' dogged adherence to the failed privatisation model means they support the drive. During the interminable GTR industrial action of recent years, I and other users endured vast inconvenience, but I didn't see public support for the cause vanish.