As SMT takes over the marketplace, some component manufacturers are also phasing out certain through-hole parts. They will not be around forever either. In fact you might have a hard time finding those through-hole parts 20-30 years from now.
Also the “SMT is harder to service” statement (implied by the “through hole is easier to service” statement) is a bit of a myth. With the right tools it’s entirely possible to build and repair surface-mount electronics. Some music electronics manufacturers (including a few modular synth builders) use SMD parts but do all soldering by hand.