I have to say Oliver has consistently made horrible decisions this whole season. Yeah Felicity has been annoying but she hasnt had a big role compared to Oliver.
The guys has made the most illogical decisions. By not letting Thea take blame for what she did she almost got herself killed.
- Trying to save Merlyn and bringing Diggle along to Nanda Parbat.
- Working with Merlyn even after everything he did, he killed Sara and poisoned Thea's mind.
- Falling right into Merlyn's trap which leads him to try and kill Ra's but he fails hard.
The guys has made the most illogical decisions. By not letting Thea take blame for what she did she almost got herself killed.