My Garmin DS61 has no subscription and I get traffic (for life of the unit).
Have you checked the terms and conditions on line recently? My garmin has ' for life' map updates and when I bought it I vowed to live to 120 to get my moneys worth.
But I've noticed over the years the definition changed to 'life of the unit' (fair enough) then to " for the
design life of the unit " This may be clarification of what they intended all along. So if in their opinion the unit has had a fair innings ,or the technology is no longer updated or broadcast they can pull the plug on support ,even if its still working perfectly.. They havnt done so yet for me.