It's a bit awkward but the info is there in the under 23s and the under 18 pages. I guess they split it up academy scholars to under 18s don't get mixed in with senior transfers. But it doesn't always make sense how/why they decide if a player is under 23 or senior.I'm familiar with it. So my problem with that website is that they don't include guys like Kaz Sterling, Jack Roles, George Marsh who are 22 and Shilow Tracey who is 23. The other website did, but is not updated.
As far as I'm concerned, guys at that age count. Clearing them out shows an intent from the club that the kids can get through the U23's and into the senior setup.
under 23s - https://www.transfermarkt.co.uk/tottenham-hotspur-u23/alletransfers/verein/9254
under 18s - https://www.transfermarkt.co.uk/tottenham-hotspur-u18/alletransfers/verein/6928
oh I agree that it does count as it no doubt shows intent, but it is a much easier job to not extend the control of a scholar at the end of their cycle than it is to get a senior player who is on a decent contract but not performing out of the club.