Although I am not casting aspersions one way or the other, the balanced approach is to consider not only the intentional radiator's EMC, but also the EMC of the affected device.
I am sure there are many radio hams on this forum who have operated entirely legally, even on low power, who have at times unintentionally interfered with their own and their neighbours' electronics. Whether that is to do with the affected devices themselves, or, for modern consumer electronics, more often the installation itself, it can take some time to resolve, and needs a large dose of diplomacy.
Having your average cellphone anywhere near many particularly older consumer audio devices and landline phones causes clicks that we've all heard for example.
The natural reaction is understandably always to blame "what's changed", but sometimes the story isn't always as black and white as that.
Maybe the router is at fault, or maybe that tube amp needs a little attention spent on EMC!