This is mostly true with Codex and Claude Code Desktop, but gets a bit trickier with 3rd party tools.
I tried out some others and both Paseo and Kepler felt a little bit clunky especially around sub-agents and workflows (even if they let me have both OpenCode and Claude Code with different providers in the same UI). And OpenCode is plain lovely in the terminal but sorta okay in the browser: compare its display of sub-agents to what Claude Code does, for example; their tabbed interface also feels a tad less pleasant than the vertical menu of projects + sessions that most others are settling on, not their old look with icon per project, that was worse. There's definitely ample room for better tooling, then again early IDEs were far worse, so hopefully ADEs will get more polish eventually!
Still, regardless of what you use and across how many providers, it's nice to have everything in a single familiar interface, if you need that.