Confidently stated, but the impact of lockdowns is likely more complex in reality. It may require years of research to tease out all the components; lockdown vs general pandemic stress, differences in implementation, etc. For example:
> Rate ratios (RRs) and 95% CIs based on the observed versus expected numbers of suicides showed no evidence of a significant increase in risk of suicide since the pandemic began in any country or area. There was statistical evidence of a decrease in suicide compared with the expected number in 12 countries or areas.
"And experts worry those studies will show a spike in suicide..."
The results weren't in, yet, when that article was written. The Lancet article is from April 2021; yours is from September 2020.
Experts are sometimes surprised by results; it's also possible the whole-population numbers have some subsets that go up and other subsets that go down.
https://www.thelancet.com/journals/lanpsy/article/PIIS2215-0...
> Rate ratios (RRs) and 95% CIs based on the observed versus expected numbers of suicides showed no evidence of a significant increase in risk of suicide since the pandemic began in any country or area. There was statistical evidence of a decrease in suicide compared with the expected number in 12 countries or areas.