@Kelly *******
The limit of 2 visa-exempt entries by a land border has been discontinued on July 15, 2024. It now is unlimited as well, like visa exempt entries by air have always been “unlimited”
However, I would pick this “unlimited” up only with a pair of golden tweezers.
At some point, after having done a certain number of visa-exempt entries, and even after entering on tourist visa, you will be pulled aside, and on your next attempt, you will be denied entry.
Having "no limit"- that’s up to the discretion of the Immigration officer you are standing in front of