As a dev that's worked in the marketing sector for 20+ years, I know that for every one person that replies there are 50+ people that liked what you had to say but didn't reply. The Like concept makes it easy to know if your audience is vibing with what you have to say (or not), esp for smaller creators. I'm not talking about algos or curation, but for the benefit of the content creators to know what their audience is looking for. Market forces. Supply and demand.