I have assessment internships at a few boutique firms.. Ikigai, Spice Route and Buregon law. But some LI threads have said bad things about the work culture and ethics at these places. Any comments ?? Any insight will help. I like tech and startup work and I will graduate next year (2023).

Look buddy. The threads here have an issue with every firm and every team. And I'm pretty sure that the associates from such firms have no interest to sit and write all this. It's mostly law students looking to eliminate competition by shitting on every possible thing out there. Nothing in life is perfect and neither are these firms nor LI.
Take everything here with a pinch of salt and go ahead and slay those internships and get a PPO. Best of luck!

Agree. Every time I see any law firm being mentioned here, there is a tirade of insults and discouraging notes about it. Every single firm. Tier-1, tier-2, tierless, it doesn't matter. Look, most firms are shitty, a lot of your partners will be shitty/firm and you will have terrible work life balance. There is no running away from that. So try to pick a place which pays well, does good matters, gives you an opportunity to grow and doesn't ruin your health overall. If you don't like the place you join, find yourself a recruiter and leave and hope for the best at the next firm.