Very much so, but also not even sure who the 4th of the big 4 is meant to be lol.
Rybakina hasn't won a big title since the Rome 1000 in May last year. Doesn't hold any big titles.
Meanwhile:
Krejcikova won Wimbledon and is a former French Open and Dubai champ.
Pegula won both the 2023 and 2024 Canadian 1000 titles.
Paolini won the Dubai 1000 and made both the French and Wimbledon finals.
I like Elena and she's been consistently going deep at tournaments but she's not winning any.
I don't think we should let the recency bias from her last match, admittedly an awful, awful performance, tarnish how well Rybakina has been playing generally this year. She's reached 5 finals, winning two of them, beating Sabalenka 6-0, 6-3 in one of them and beating Iga along the way on clay in the other. Rybakina has made the quarterfinals or better of all but two tournaments she's played in 2024. Rybakina's 80% win percentage is the second best on the tour after Iga. For comparison, Paolini and Pegula are at 70% and Krejcikova is at a distant 63%. And Rybakina's competition has been tougher. She's played Iga twice and Sabalenka twice this year going 2-2. Paolini and Krejcikova are a combined 0-2 against Swiatek and Sabalenka, both losing easily, while Pegula has not played either in 2024. Against the top 20, Rybakina is 10-4, Paoloini is 6-5, Pegula is 2-2, and Krejcikova is 4-4. So Rybakina has played more top 20 players than Pegula and Krejcikova combined and yet has a superior win percentage. Krejcikova's season being considered stellar is entirely owing to her going on a hot streak at Wimbledon. Otherwise, Krejcikova would right now be 10 wins to 10 losses on the year with no other titles, finals, or semis.