Yes these are found in a few places in Egypt and notably some are dug vertically [0]. Along with these "scoop" marks there are a few tombs "boxes at serapeum" that have nearly perfectly squared off cuts and perfectly smooth surfaces. [1] These are the main points of contention

We are leaning into conspiracy theories / not accepted history but making these marks with the currently thought tools seems quite insensible, and are related to the article. Folks seem to think we have not found the real tools that created these structures. The vertical inward scoop marks are especially suspect.

[0] - https://www.theancientconnection.com/aswan-unfinished-obelis...

[1] - https://www.theancientconnection.com/megaliths/egypt/the-ser...