I agree it's all part and parcel, the stats are just that, numbers assigned to a chart. Now suicide rate might be stable but yeah there might be 50% are due to lockdown. The key really is, how much does locking down cost vs staying open, how many would suicide because they lose a family member to covid and feel lost and alone, what mental health effects would that have on the survivors if they knew they could have done more?. How many will blame themselves for bringing covid into their family and causing the death of a loved one.
It's not as though you let everyone die and suddenly everyone is going to be happy, pretty sure those affected will have grief, regret and anger. So the mental health issue applies to both cases of lockdown or not.
So far all indicators are it saves lives and in the long run you are no worse off than other countries economically that have had to deal with covid. Yes we sacrifice active freedoms, but, part of the community in affected countries cant leave home due to fear. Which is better? time might give us an answer, or maybe not...