Of course... no competitive shooter on PC ever not have the possibility to change fov since Q2. People quoting games here clearly never played them in a competitive manners, which is why games like Unreal Tournament (1999), Starsiege: Tribes (1998) and tribes 2 (2001) as not having fov slider get mentioned.
I just happen to have played those game competitively for decades. They all have well known and given commands to change field of views for competitive players. In the exemple of Unreal Tournament 70-120 being the possible field of view settings. Theres no slider, but the dev still given us the options to change it. People just dont understand that pre 2003-2004 PC gaming did not have Console like UI. For exemple Unreal Tournament had a windows like UI, with an open consoles to enter commands. Many options were not available in the menu itself, but were just inputs in the command console and made available via the internet. Only after 2003, was Unreal Tournament 2003 given a fov slider, since the menu was just a copy pasting of Unreal Championship, the first xbox live shooter, with more options.