Tesla owners need to use an adapter to use non-Tesla charging stations, so I expect they didn't have one as all these queuing pictures appear to be only Tesla related.
Just highlights the need, which existed from day 1 of the first EV, to standardise charging systems. After about 15 years of smart phones we know have a pretty much universal standard of USB C; something similar is needed for EVs. If the industry is unwilling to do it surely it is a case for Euro vehicle standards legislation to be implemented.