"Gated" actually means MORE complete than "produced". "Produced" could need rework; "gated" cannot. The disinformation media, of course, wants to claim that it's the other way around
I have to imagine that Tesla wanted to defer the necessary deliveries into Q3 in a manner where they would not risk that the IRS (or whichever the responsible agency) would take Tesla to court and claim that those deferred deliveries were to be counted as Q2 deliveries (with a significant impact on the tax credit, hence IRS), since the owner of the vehicle is already known, with the vehicle built to their personal specification (never mind that there is not much to choose from), and with the buyers' commitment to the purchase via the binding and non-refundable (partial) payment, all of that having taken place in or before Q2.
This is pure speculation, but this could explain why the wording was far from e.g. 'being delivered', which could otherwise have made Tesla's statement on Q2 seem closer to their guidance (and various estimates) regarding their deliveries.