The relative usefulness of leafleting and canvassing is hard to measure so I wouldn’t say it’s less useful or important
I think people are scared to admit how outdated doorknocking is. People find it invasive and inconvenient, and it’s a very good way to demoralised and exhaust activists. There’s a need for presence but the reliance on such incomplete data just isn’t going to allow us to target messages in the way many think it will.
GOTV and offering lifts on polling day is incredibly important but in my experience, canvassing is a lot of work often in seats that aren’t winnable.
Candidates need to do more themselves to engage communities and show what they’re going to be like once elected. Being “visible” isn’t enough.
And obviously in a general election the most important thing is the national swing so social media boosts, national level campaigns etc. can be a better use of everyone’s time.