It certainly does intentionally mislead, given the way it's written. What phrase is in the sentence preceding the latter?
"It is a myth that the COVID-19 vaccine weakens the immune system."
In the very next sentence, COVID-19 is missing prior to the word vaccine. Subtle. Intentional. Misleading.
"After someone receives a vaccine, their immune system is better equipped to protect against subsequent infections."
The author knew what he was doing and props to him, because it's actually deviously creative.
Because all other vaccines better equip someone against subsequent infections, the Covid vaccine therefore must too. That's his argument. He never states the Covid vaccine better protects you against subsequent infections. It's simply because "all vaccines do", the Covid vaccine therefore must also.
Which is really dangerous to infer or state, given that the vaccine technologies are totally different, etc.
That's propaganda. It's well written and it's intentionally deceptive.
And, as we've seen, the vaccines really don't appear to better protect the vaxed against reinfection, so.