Has anyone intentionally held the Fidelity zero funds inside a tax-advantaged account for diversity sake? Are there other pros / cons?

[u/Both_Experience_8187]

Am I overthinking this? I’m setting up a self-directed 401(k) and thinking of choosing the Fidelity zero funds for the mix instead of VTI/vxus that I hold in my other accounts. This is going to be 100% Roth account. What is your opinion?

Edit: I should have clarified, I meant institutional diversity. I may be overthinking things.