Because they don't want current Ukrewers to get promotion and bring their team with them. Remember in 2020 that they frozen all promotion and added more layers to internal titles to be about to get advanced roles. for example, a junior to a manager may go thorugh 4 different levels: junior, senior, lead and manager, it's 4 layers. Now they changed from 4 to 7 layers, and they have to be outstanding performance. Then, they created, introduced and inserted more roles - Asst. Manager > Manager > Sr. Manager > A more Sr. Manager to manage other managers. On top of managers, there are Director, Sr. Director, VP, Sr. VP, xVP, EVP and so on..