Ok turtle Kens are not hard to beat, nor is it a good idea as a playstyle. If someone is turtling with Ken just charge your bar and walk into sweep distance. Often turtle Kens will just wait and poke when the opponant is in their range, so just try to bait a keep away poke and counter it. They will just try to sweep you if they are in distance (which you can reversal on block) they will poke with cr.mk (which you can reversal on block) or just wiff low strong (try counter poking that as well or simply UOH to pressure) if they wiff a sweep or cr.mk from your footsies then simply punish the wiff with a sweep or super, by doing this they feel as if they cannot spam pokes to zone you from dashing in. Once they are affraid to poke you, simply dash in and apply serious mindgames and hopefully corner them.
A turtle Ken is helpless in the corner if you know what your doing (eg: srk stuffs, multiple throw mindgames, high low guessing games and fakeouts).
Now to adress your “offensive” Ken style: there is no spacific way in which Ken should be used in the context of someones style, only in the context of the matchup. Ken should turtle against characters like Chun li, Gouki and Hugo, but he should always be rushing down characters like Yun, yang, Ryu, another Ken.
But you must learn to rush down intelligently. If you are being hit with reversal stuff on wakeup dont take it as a sign to switch to a turtle game, instead think of it as “now you have the chance to bait something and punsh for serious damage” practice simple mind games like wiffing a jab or two while they wakeup and then do cr.lk, cr.lk, and confirm to super on a hit. Use the shorts to stop reversal SRKs. Next time do the same setup then dash back or walk just outside throw distance right before they get up to make them wiff thier SRK and punish with kara SRK’s or s.hp, xx mp.srk, xx SA3. This will instill doubt in there gameplan and they wont attempt a second wakeup SRK/super unless they are really dumb or really smart. You shouldn’t always attack on wakeup against characters with a reversal but you should always remain in key positioning distance where you can punish baited wakeup moves and you can continue your offense if they appear to do nothing.