Your performance will be terrible if you start doing this.
Just tell them to check Google Analytics for percentage of desktop v mobile traffic. They should know this.
Also, around 90% of all web traffic is mobile anyway. Mobile use even trends high in B2B, where you would think most would be desktop.
It honestly sounds like your optimization team is worried about the wrong metrics. Shouldn’t they be worried about conversions? Why on Earth is there is KPI tied to device usage, which is something you have zero control over.
Like, you can’t control what devices users are using. Why would they be wanting you to go against best practices to meet some arbitrary metric of desktop users?
It sounds like this “optimization team” doesn’t understand that your traffic needs to convert into a customer or MQL. It grinds my gears to see posts like this because you are trying to be nice and indulge their ideas, but you’re going to be the one paying the price when your campaigns stop converting or your CPA rises because you made a bonehead move like trying to get desktop traffic. lol. Not your fault, just sucks this question is even asked in the first place.