I don't want conversations. I want information. If the info is already missing in a web page I fail to see how a virtual salesperson saying "well, I don't know"

I don't want conversations. I want information. If the info is already missing in a web page I fail to see how a virtual salesperson saying "well, I don't know" is going to sell better. Case in point: I'm cleaning up a house to live in and we need a new kitchen sink. The problem is there was already one there so we want to buy a replacement that is bigger than the current cut out in the counter and also fits nicely with the pipe installation. Searching for a sink online has been a nightmare: if there are schematics (which are often missing) there is always some key information left out like the depth of the bowl. This includes the king of online retail: Amazon lists package size and nothing else. When was the last time the package size influenced your purchase? Buying in person hasn't been much better and the prices are almost double! At least I can bring my measuring tape and do the schematics myself, though I still hate getting pitched by salespeople that often know much less than me after a 20-min online research. In the end we're going for the cheapest one that has a reasonable return policy. Who cares about the more expensive ones if, for all I know, the only difference is their aesthetics? This is such a common pattern I started dreading buying online. I'm tired of hunting for the specs on Google. That's the shop's only job! IMHO the article is nothing more than an advertisement for the author's business. Maybe he's sure of the paradigm shift but I'm definitely not because an actually useful conversational assistant requires both competence, effort and, more importantly, exposes the seller to risks (official information = contractual obligation, which is IMHO the reason you will not get the answers IRL or via customer support either).