I really hate to downplay Ederson's influence. Hes great at distribution, but its not like you have an assist or key pass every other kick. 95% of passes by GK during the game are more or less basic ones, even by Ederson.
If you have to count how many balls by Ederson has been irreplaceable, You would be a bit surprised is my guess.
Ortega is very good on a ball, definitely above average. The impact of the GK switch could be close to not noticeable. And there is scenario that we would end up better with Ortega thanks to his shot stopping and 1 vs 1 ability.
Thats been said I love Ederson,hes bravery and intreansigence when going to distract an attacker. Sometimes hes been a bit rush, but generally a figure to be feared of.
Im not really into conspiracy theories, but I have my fucking suspicions. Rivalry between Ortega and Ederson was real at the end of the season. Ederson maybe felt it a bit when coming off during Spurs game. Hard to believe Pep and staff liked it. Saudi Arabia and UAE are rivals but they cooperate upon many areas, including football projects. Word is UAE advisors helped Saudi Arabia to get into the club football in Premier League during the first steps. These same people are more or less in touch. My feeling is that maybe this Saudi interest on Ederson is not really against City plans and wishes.