Global shipping was in chaos even before the Suez blockage.
I can assure you that's true. We're still waiting for a large shipment of the one thing we actually buy directly from China, the custom-made screw-lock USB cables we use on all our interfaces. They shipped from the factory in January. They were supposed to be here by the beginning of March. They're not, because the ship they're on still hasn't got a berth to be unloaded on the west coast. That ship was supposed to unload in Seattle, but Seattle was full, so it got re-routed to Vancouver. I'm not sure what happened there, but it ended up getting sent back to Seattle and still hasn't been unloaded. Anyway, it's a mess.
Thankfully, we've never gone full "JIT". Your typical MBA would say the way we run our business is "wasteful", because we try to keep a few months worth of inventory on-hand at all times, but doing that has allowed us to keep filling our customers' orders relatively smoothly thoughout the turmoil of the past year.