Most technology investors have a decent understanding of the market context your startup is operating in. So there is no need for that awe-inspiring, eye-opening, TED-talk style introduction presentation that plants an idea in the audience head they never heard of 17 minutes before.
Most VCs I speak to value a deck that makes it clear what the company is doing, how to compare/contrast it to companies and technologies they already know, how for the development is and what the background of the team is.
So, an Apple product launch-style is not needed, but still there are some pitch deck hygiene factors. Your deck should look decent and professional, not only so that the VC understands it, but maybe even more that the VC gets confidence in you as a professional communicator:
Can you sell to potential customers?
Can you sell ideas to the board?
Can you sell to investors in future fund raising rounds?
The strategy “I sent a bare bone deck in standard PowerPoint format because we spend our time building a company instead of presentations” might look cool, but it will leave a lingering question in the investor’s mind.