Salesforce Fact #984 | Using < in LWC template expressions
LWC now supports template expressions. However, the use of less than operator(<) has some limitations. It doesn't work in text nodes, works within expressions which are quoted as attributes. The workaround is to use the other way i.e. use the greater than or equal to operator to get the desired result. Attached are the screenshots. Reference: https://developer.salesforce.com/docs/platform/lwc/guide/create-components-html-expressions-compatibility.html