Tyre fitter refuses assembly

Hello, please I need your assessment of the situation I have experienced today. My opinion completely intact winter tires were not mounted at the tyre service or the employee refused to perform the assembly. I have a guess what it might have been about but later on. He meant the tires are old and you can no longer mount them. First I would like an assessment of this set of winter tires purely from the outside. t 5 years and the mileage approx. 25.000 km as I drive little in winter. Rest profile height approx. 9mm. On the outer edge you can see small rubber stubs. In some places two are side by side, sometimes only one and sometimes the few are missing completely. Unfortunately not white for what this serves, possibly a kind of wear indicator. The tires were stored over the summer in the basement. Photos I am attached. Mfg, Danube