But these passwords are secure right? Let's say it's your Facebook password, unless it gets compromised, there's no way to brute force it? At least that was my understanding 🙈

this depends on the attack, But if the attacker knows the seed phrase, the passphrase needs to have ~70bits of entropy. Per truly random alphanumeric character, you get about 6bit per character. so you need 12 minimum If the passphrase is not truly random, the bits you get per character sink drastically (eg. it includes well known sequences or numbers)

FB password is not an encryption password. It's an access password. Apples vs oranges. Encryption password has to be LONG. 30 chars. 40 chars. And has to be stretched by password stretcher known as a KDF. The KDF has to be chosen accordingly (to current technological advancement) People have brains mangled by google and apple and 'one' pin. This is wrong. Learn about basic entropy and encryption. And teach others, so we don't have fuckups like Trust Wallet with a 6 digit pin as password which has an entropy of a dick. And no, tee/ree doesnt fucking count.