* You're pitching this search engine specifically "for devs".
* You're pitching it on HN, a community which (correct me if I'm wrong, @dang) is largely composed of your target audience.
* When given feedback, you're responding very defensively in almost 100% of your comments with something akin to "an extension takes 5s to install and uninstall, just do it, no one cares, we don't want to prevent ordinary folk whom we consider morons from using our search engine so everybody has to use our middleware to even give it a try". Buddy, in case you can't see why that's inane, let me help you: you're marketing this as a search engine for devs and devs are telling you why they won't use it. If you can't even get your target audience to give it a try, why on earth do you think the average person (who sadly doesn't give a fig about "the big bad monopoly boogeymen") will spare a glance for your product _if they even hear about it in the first place_? You're defending a user-hostile practice with shallow nonsense logic.
It's been my experience that founders who are seeking to "disrupt a monopoly" by ignoring feedback from their target audience don't end up disrupting anything (unless you count disrupting their employees' lives when the VC money runs out and everyone gets laid off), they just end up alienating anyone who'd ordinarily care enough to give the product a try. Best of luck, though.