Does it? I think of it this way:
1. They're streamlining production. Makes it much easier if every car is the same
2. People can just pay $10k to unlock DDP or $4k to unlock SSP. The hardware for DDP isn't 10k, its probably $2-3k, so if the buyer doesn't end up upgrading, oh well lucid bites the bullet for that customer, but for secondary owners, they still have the opportunity to unlock those options without buying a brand new car.
3. If they do charge subscriptions, it wont be for something like heated seats which are in themselves a relatively trivial cost ($300-500?), so forcing people to pay subscriptions seems stupid. But things like DDP are massive purchases ($10k) and if somebody can pay for DDP for a road trip for maybe $100 a month (? i have no idea what they would charge for it), then lucid gets a bit of money, and the customer doesn't have to pay $9900 for something they might only use once.
4. There was that unconfirmed rumoured camera upgrade that enabled 360 cameras etc because some people wanted 360 cameras but not highway assist/pilot. By including the hardware necessary, people wont need a retrofit; they can just pay a fraction of the $10k just for 360 cameras.
In general, I think lucid realises they cant make stupid decisions that'll really anger people (like charging a subscription for heated seats), because that just gives people like Elon an opportunity to scream about how bad lucid is. Just my opinion.