> Non dividend stocks only have value because other people think they have value (i.e. greater fool theory)

Alphabet buys back shares equal to the GDP of Uganda every year. There are more ways to return capital than through dividends.

> Only dividend stocks have some base value connected to how well the company does.

That's not how it works. If the company has profits they can distribute it in many ways. Dividends is one, but not a great one because it forces you to pay taxes on it this year. Or they can buy back shares which increases the share price, which is better because then you don't have taxable income on that until you decide to sell. Or they can reinvest that money into the business to grow it, which is the ideal option, although not always possible.

Every time I try to explain this to people I feel like I'm talking to a brick wall. Even more frustrating to hear, otherwise reasonable, market analysts say that "dividends don't matter because the stock value goes down on payout". What doesn't matter is how successful a company is if they don't share their profits. You're literally buying a Pokémon card just with a lot of liquidity until the illusion of value bursts, hoping that somebody will buy you out because P/E improves or whatever.

They do have intrinsic value!

Growth stocks trade on a multiple of earnings: earnings have intrinsic value.

This take makes sense but isn't really accurate. A lot of companies have stock buy back programs in lieu of dividends; essentially, using their cash flow to manipulate their stock price instead of returning money to every investor. Now this doesn't guarantee a particular price usually, but does help push the price up when they are buying a significant amount from the market.