According to 't Hooft himself (source: https://physicstoday.scitation.org/do/10.1063/PT.6.4.2017071...) "The response [by fellow researchers] has been very mixed. Many other researchers are clearly very skeptical. They should be, because there are important unanswered questions. Others have expressed their interest and support. What concerns me is that I haven’t yet found colleagues who completely understand my approach. And also, of course, I don’t know what they say behind my back.".
As I wrote: this work is controversial. For a very positive review, see for example
> https://physicstoday.scitation.org/doi/10.1063/PT.3.3629
According to 't Hooft himself (source: https://physicstoday.scitation.org/do/10.1063/PT.6.4.2017071...) "The response [by fellow researchers] has been very mixed. Many other researchers are clearly very skeptical. They should be, because there are important unanswered questions. Others have expressed their interest and support. What concerns me is that I haven’t yet found colleagues who completely understand my approach. And also, of course, I don’t know what they say behind my back.".