The analysis referenced by the article: https://e-janco.com/career/employmentdata.html#p7TP3c2_3
The table "Change In IT Job Market Size - December 2023" seems to indicate that 5.5k jobs were added to the 'job market' in 2023, contradicting what's being said. (Which isn't even representative of total employment in the sector, only the open job postings for the sector).