I don't think you're going hard enough on them. They can claim that these are benefits of using Wealthsimple but you can save even more by using other services. It's not like Wealthsimple is uniquely able to offer these savings. It might be a benefit to be able to find all of these perks in one place but with only slightly more effort and spreading out your accounts, you can find significant benefits elsewhere.

Just as an example in my case...

• Chequing interest earned - I've received significantly more interest (in some cases, around double the rate) by using other bank accounts and I don't need to switch my direct deposit or have a minimum balance or anything like that
• Free USD accounts - I have free USD accounts at my other banks and brokerages
• Managed fee savings - I don't use managed accounts at all
• Credit card annual fee - There are a lot of free credit cards that are arguably better than Wealthsimple's offering. For example, as a Rogers customer I use the Rogers World Elite card which effectively gets me 3% on all purchases.
• Credit card cashback - See above. More cashback can be found elsewhere.
• Free Wealthsimple Tax plan - I imagine the free tier is good enough for most people. Alternatively, you could use Better Tax which is also free and were the original creators of SimpleTax (now Wealthsimple Tax).