He's not cherry picking random dates, he just using different dates to compare different data. If he had compared the gas prices from 2020 to 2022 in order to make the increase of prices seem higher than it was, that would be bad faith, but he didn't do that. If he had compared the increase of food prices between 2022 and 2024 while ignoring a large drop in food prices between 2020 and 2022, that would bad faith, but that didn't happen.
Bad faith is pretending that comparing the gas and food prices and randomly speculating on how they make Americans feel is something, "legitimate economists," do. Bad faith is saying that, "[Biden] wasn't even president in 2020," as though the state of the economy just before he took office isn't relevant to this conversation. Bad faith is pretending I said you never read the article when I clearly said you didn't read the article before you started criticizing it. But hey, you do you.