After reading all the comments and searching stuff up on the Internet, the answer to my question is that it will take a very long time to get burn in, and by that time the screen won’t be the only thing to worry about. It’s just like anything else, it will degrade over time, but that will be years and shouldn’t stop you from buying it (just like lithium batteries degrading doesn’t stop you from buying electronics).
After reading all the comments and searching stuff up on the Internet, the answer to my question is that it will take a very long time to get burn in, and by that time the screen won’t be the only thing to worry about. It’s just like anything else, it will degrade over time, but that will be years and shouldn’t stop you from buying it (just like lithium batteries degrading doesn’t stop you from buying electronics).
Also as others have recommended, this video helps: https://m.youtube.com/watch?si=gt8qBV6i42xrFZFj&v=Po8jAQjvd88&feature=youtu.be