Is Amazon’s 1000 indexed bullet point characters real?

I’ve heard advice and seen guidelines within Amazon that the platform will only index the first 1,000 characters of your listing’s bullet points, and that posts should be 200 characters per bullet to stay within the limit. But how much if that actually works in reality?

I see competitor listings that break this rule all the time, with a few notable ones even having 10 really long bullets and still ranking #5 for their category. (Yes i realize sales velocity and customer experience play a factor in this too).

In your experience, how much does this “1000 character limit” actually matter?

reference post from Amazon Seller Central: https://sellercentral.amazon.ca/help/hub/reference/external/GX5L8BF8GLMML6CX