So, if you do the inspect element trick and buy the unavailable item, will your account be deleted?"

The "Inspect Element glitch" has been patched by WeeWorld, and can no longer be used to obtain unavailable items. Alternatively, we recommend our Gadget, Closet Swap. The Gadget allows you to access the Closet of another WeeMee, and buy items from it as if it were another Shop (and free items will continue to free, even if they're unavailable/exclusive).

By taking advantage of glitches, you are putting your account at risk. However, WeeWorld does not usually close the accounts of those who do unless they are being especially disruptive (spamming, encouraging others to use glitches, etc.).