FULL on-chain "scaling" is absolutely ridiculous. What's next? enable micropayments also on-chain? TX's of less than 1cent being replicated over thousands of full nodes and stored for centuries?
Ridiculous.
One of the primary points of bitcoin is that anyone can send any amount they want to anyone they want with no busybody middlemen deciding what constitutes a proper and legal transfer.
Someone wants to pay a fee to send dust, that's his business and working as intended.
That's what people seem to keep forgetting. It's not free.