As long as I been around startups, about 15 years, the advice always have been had more success getting warm intro. Even more back in the day than now. I think PGs essays lays out the fundraising process this way too.
The advice is never just send deck to a VC. Same as just applying to a company. Private organizations have no need for any kind controlled process, you're always better having or building of personal relationships and convincing people directly first. It's often even about the pitch or pitching skills. It's more like relationship or case you build, then the pitching is just formal step to close the deal.
I think the cold approach only works start the relationship if you have proven business, great potential and can tell that story well. But also by then VCs might already know about you and come to you.
Otherwise it's always about building some level of personal connection first. Essentially you're asking to someone personally believe and bet their internal and external reputation on. They are not going to hand you the money after one hasty email and deck.
The anti-VC crowd often try paint this as some kind of exclusive country club, but it's not true. So many new founders raise capital all the time. VCs are always looking for new founders and companies.
But it's also true that if you just crawl out of the woods one day and go meet a VC and ask them for $2M is likely not going to happen. If you don't get a single person in the world with some kind of VC connection to make a warm introduction to you, it often considered as a filter that you're not serious enough about your business.