Technically
@Zyphox is right... but i don't think he's as bad as what some people are making him out to be.
Jumping out of b21 kunai - From what i've tested you can only jump out at max b2 range. If you think theyre going to jump forward you could tele cancel and anti-air them.
b2/b3 Mix-up - Not sure if this is reactable, his b2 is 24 frames but if theyre trying to react to it you have other options like throw, delay your timing or stance switch to throw them off.
Reptile's Slide - b21 kunai trades with slide his 8% for your 7%, except he just used a bar of meter b21 tele cancel depends on distance when he can punish it, if he misjudges the distance then he's eating full combo.
To add on to Zyphox's post:
If you still aren't familiar with how to get out of his "pressure", his f122+4 string (the one that ends with an overhead) just simply block the 3rd hit low then armor out. He can't tele cancel to block in time so that string is completely unsafe if you have meter. There is no "mix-up" between kunai and the overhead.
EDIT: Some characters actually can't armor out of the string, but they can still armor out of kunai.
Jump punch into 50/50: his b2 and b3 are so slow unless he lands a really deep jump 2, you can armor out of it. And after getting hit by a kunai (especially in the corner) you can armor out.
On wake-up: Takeda's teleport is so slow you can check him with a poke and still block his wake-ups in time and punish.
It seems to me like most people don't know how this character works or they don't know the match-up. I think he's good but he has a lot of problems as shown in this thread. People saying Ronin or Lasher are the way to go, idk I've tried them all and I definitely think Shirai Ryu outclasses them.
4. every special move besides Kunai is punishable on block and whiff across all variations except MB blade call.
MB blade call is punishable too lol.
5. This is false. B21 spear is not interruptable. You can also mix up your pressure between b21 kunai, b2 kunai, b11 kunai, b1 kunai etc. Most of them are interruptable but if they are looking to interrupt after b21 they will get hit by the b2 kunai. You can also always throw out EX kunai to beat out armor and jumps like I said earlier.
They can option select armor out of b2 kunai or b21 kunai. Just input your armor and you'll either block the string or armor out. Not really a mix-up...
A lot of Raptors pressure was that B2,1~kunai, B2~kunai, B2,1 into tele....I wish i had labbed this before playing Raptor. I would have destroyed him knowing there is a gap.